Means for casting car-axle boxes



(No Model.)

I. H. OONGDON.

MEANS POR CASTING GAR AXLE BOXES. N0.314,z26.

Patented Mar. 24, 1885.

UNTTn STATES BATT-NT Ottica.. i

ISAAC H. GONGDON, OF OMAHA, NEBRASKA.

MEANS FOR CASTING CAR-AXLE BOXES.

SPECIFICATION forming part of Letters Patent No. 314,226, dated March24, 1885.

(No modtl 'i YTo all whom it may concern,.-

Be it known that I, Isaac H. CoNeDoN, a` citizen ofthe United States,residing at Omaha, in the county of Douglas and State of Nebraska, haveinvented certain new and useful Improvements in Means for CastingCar-Axle Boxes, of which the following is a specication, reference beinghad therein to the accompanying drawings.

This invention has reference to improved means employed in castingcar-axle boxes of that class whichis shown in United States Reissue No.8,947 of original Patent No. 192,199, dated June 19,1877; and the objectof the invention is to provide suitable cores for determining theoutline and contour of the interior of the car-axle box and the covertherefor, which are shown in said patents.

Heretofore in producing the said boxes, known as the Hewitt Box andCover,77 the patterns and core have been made in two pieces. These havebeen divided upon a substantially longitudinal vertical line or section,so that in placing the cores in the sand either of t-he two sections wasliable to become misplaced with relation to the other, so that thegrooves or guide-slots for the cover, the apertures for the dust-guard,and the bearings for the brasses upon either side were thrown out of thedesired relative position with those of an opposite side of the box.Besides these objections, others resulting from variation in the actualsize of the section of the core would produce irregularity in t-heconformation of the interior of the box.

Referring to the drawings, Figure 1 is a perspective of the main coreand a covercore mounted thereon, each being constructed and arranged inaccordance with my invention. Fig. 2 is a perspective and interior viewof a cover-core box and baking-pan., Fig. 3 is a perspective of one sideof said box detached. Fig. 4 is a perspective of the core formed in andby the use of the box represented in Fig. 2, and Fig. 5 is a centralvertical longitudinal section of a flask with the cores in positiontherein.

Like letters indicate like parts in all the figures.

It will be noticed by reference tothe patents above mentioned that thecover of theaxle-box is retained in connection therewith by means of alug at each of its edges, which rides in grooves formed in the innerwalls of the box and at each side of the opening therein, through whichoil is introduced, the cover being removable from the box only after thebox is removed from the truck, and then by withdrawing the cover to therearward from the said opening, the lugs passing out of the grooves attheir upper' and rear ends.

A pattern of the desired conformation is employed to produce the moldXin the sand, which gives the exterior conformation to the box, and alsoseats or core-prints Y at suitable points for sustaining the projectionsA of the main core A, so as to support the same Within the mold in suchmanner as to give the desired thickness to the walls of the box andotherwise determine the contour of its interior. The main core isprovided with depressions AIl at its upper edges and about at itsmid-length, into which the metal runs to form lugs or guides formaintaining the usual brass bearing-blocks in proper position within thebox, and it is also provided with a vertical portion, Ai, which forms inthe completed box the receptacle ofthe dust-guard and portions whichembrace the axle at or near its point of entrance i'nto the box. Thesaid portion A3 is united to the main body of the core by a rib or web,A, arranged at the bottom only and about the transverse center of saidportion. The projection A is substantially rectangular in cross-section,and produces in the completed box the rectangular opening through whichoil is introduced. Upon the projection A is mounted a separate core, B,having a rectangular opening, B', adapted to tit the projection A', andhaving at each of its edges a curved rib, B2, the upper portion of thecore being thickened and curved or bent to agree substantially with thecurvature of the ribs.

To make the core B, I employ a box, C, 9 having a rectangular frame orflange, O', arranged centrally thercin, and having end walls, C'l C,t-he latter curved, as shown, so that in connection with the curvatureC* in t-he bottom between the tiange C and the end wall C3 a generaloutline is given agreeing with that of the core to be produced.

D represents the side walls of the core-box C, and each one is providedwith rabbets or IOO iianges D', adapted to enter a groove, C", l formedin the curved end wall C3, and a groove, G5, formed in the end Wall C.By this construction the sides may be removed from the bottom, and withthem the core be lifted out directly therefrom.

I construct the core-box C entirely of iron, as well as also its sidesD, so that in casting, said sides I form curved depressions D2, whichform the ribs B'Z of the core, which in turn form the grooves for thebox-cover. By being formed of iron the box serves as a bak-ingpan andprevents the core from warping during the process of baking.

The box C, being filled with core-sand properly pressed therein andstruck off to agree with thev outline of the upper edges of the same, isplaced with the core therein in an oven for the purpose of baking thePcore, and when baked the core is removed from the box by lifting thesides and the core from the bottoni and end walls of the box, asdescribed.

Having described my invention and its operation, what I claim isl. Thecombination of the main core A and the separate core B, substantially asspeciA fied.

2. The combination of the main core A, provided with the core-supportingprojections A,With the separate core B, mounted upon one of theprojections, substantially as specified.

3. The combination of the main core A, provided'with the depressions A2and with the projection A, with the separate core B, provided with thecurved ribs B, substantially as specified.

4. The core B, provided with the opening B and the curved ribs B3,substantially as shown and described.

In testimony whereof I affix niy signature in presence of two witnesses.

ISAAC H. CONGDON. Witnesses: Y

G. J. HUNT, I. E. CoNGDoN.'

